Robert Downey, Jr. is convinced it is only a matter of time before he is on stage collecting a Best Actor Oscar.

The Iron Man star has twice been nominated for an Academy Award, once for 1992's Chaplin and again in 2008 for his comedic turn in Tropic Thunder.

However, Downey, Jr. has no qualms about missing out on Hollywood's biggest prize to Al Pacino and Heath Ledger respectively, because he knows he will eventually hold the fabled golden statuette in his hand.

He tells American GQ, "I know it's going to happen. That's just a fact. I, personally, would be shocked if we went to the end of the tape (my life) now and I didn't have at least one. Because it just doesn't make sense. That's why I don't mind showing up and watching everybody else get them."

Despite his self-confidence, the actor insists he doesn't strive for critical acclaim, adding, "I don't care. I used to think I cared, and I couldn't care less. Now, I'm not saying I wouldn't get a little choked up, but it is amazing to see how people are literally hyperventilating when they get up there, because they have such an attachment to this outcome. I mean, it's not like we're at the f**king Olympics or something."